The present invention relates to compounds of formula (I) or the tautomers or pharmacologically acceptable acid addition salts thereof, characterized by a topological polar surface area value (TPSA) of at least 145, wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, X, and Z.sup. have one of the meanings as defined in the specification, to the use of compounds of formula (I) as medicaments, to pharmaceutical compositions comprising at least one compound of formula (I), as well as to medicament combinations containing one or more compounds of formula (I). The compounds are ENaC inhibitors useful for the treatment of respiratory diseases and allergic diseases of the airways. ##STR00001##

The present invention is directed to a process for making Tetracyclic Heterocycle Compounds of Formula (I):

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and pharmaceutically acceptable salts thereof, wherein X.sup.1, X.sup.2, R.sup.1, R.sup.2 and R.sup.3 are defined above herein. The present invention is also directed to compounds that may be useful as synthetic intermediates in the process of the invention.

An organic light emitting device and a display device including the same, the organic light emitting device including a first electrode; a hole controlling layer on the first electrode; an emission layer on the hole controlling layer; an electron controlling layer on the emission layer; and a second electrode on the electron controlling layer, wherein the emission layer includes a hole transport host material, an electron transport host material, a bipolar host material, and at least one dopant material.

The present invention is directed to a process for making Tetracyclic Heterocycle Compounds of Formula (I) and pharmaceutically acceptable salts thereof, wherein X.sup.1, X.sup.2, R.sup.1, R.sup.2 and R.sup.3 are defined above herein. The present invention is also directed to compounds that are useful as synthetic intermediates in the process of the invention.

##STR00001##

An organic light emitting device and a display device including the same, the organic light emitting device including a first electrode; a hole controlling layer on the first electrode; an emission layer on the hole controlling layer; an electron controlling layer on the emission layer; and a second electrode on the electron controlling layer, wherein the emission layer includes a hole transport host material, an electron transport host material, a bipolar host material, and at least one dopant material.

An organic light-emitting device including a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a compound represented by Formula 1:

##STR00001##

When the compound represented by Formula 1 is used as electron-transporting material, an organic light-emitting device including this compound may show significantly improved efficiency, driving voltage, high luminance, and long lifespan characteristics.

The present invention relates to an organic monomolecular compound having an alkoxy functional group in a chemical structure comprising a quinoxaline-based compound and a triphenylphosphine oxide-based compound. Specifically, the invention provides an organic monomolecular compound represented by Formula 1, as well as a device comprising the compound and a method for manufacturing the device.

##STR00001## (In Formula 1, R is a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms.)